package com.test.lock;

import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class CountDownLatchDemo implements Runnable {
	static final CountDownLatch COUNT_DOWN_LATCH = new CountDownLatch(10);
	static final CountDownLatchDemo demo = new CountDownLatchDemo();

	public void run() {

		// 模拟检查任务
		try {
			Thread.sleep(new Random().nextInt(10) * 1000);
			System.out.println("Check completed...");
			COUNT_DOWN_LATCH.countDown();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	public static void main(String[] args) throws InterruptedException {

		ExecutorService exec = Executors.newFixedThreadPool(10);
		for (int i = 0; i < 10; i++) {
			exec.submit(demo);
		}
		// 等待检查
		COUNT_DOWN_LATCH.await();
		// 发射火箭
		System.out.println("Fire ...");
		exec.shutdown();
	}
}
